Lift-truck



Sept. 22, 1931.

I. EISENBERG .LIFT TRUCK Filed Jan. 27, 1930 INVENTOR 5 Sheets-Sheet p ,1 l. EISENBERG 1,824,201

LIFT TRUCK I Filed Jan. 27, 1930 5 Sheets-Sheet 2 Sept. 22, 1931. u. EISENBERG LIFT TRUCK Filed Jan. 27, 1930 5 Sheets-Sheet 3 Sept. ,22, 1931. 7 I, EISENBERG 1,824,201

LIFT TRUCK Filed Jan. 27, 1930 5 Sheets-Sheet 4 INVENTOR 7/ 74 g, 73' '6 ATTORNEY p 1931- I. EISENBERG 1,824,201

LIFT TRUCK Filed Jan. 27, 1930 5 Sheets-Sheet 5 Patented Sept. 22, 1931 S'JRATTENT OFFICE V rslnon r n i snnnnne or nnookixn, NEW YORK I l turf-muck) e Y i Application m was zvi eao. sem No. 423,675.

This invention relates I to if ortable trucks, and has for o'ne f its-obj'ects the pro vision of a deviceof this character-adapted M for removing loaded platforms from shelves, tables, machines and the like, and'transporting same wherever desired! Another object of the nvent1oni1s to-provide a lift truck, mounted upon'a portable carrier, and adapted tobe slid therefrom undefneath a loaded "platform and li ft same from a shelf, machine, or' the-like and transport the said platform to any desired loca- A further object of the invention is to proed upon a movable carrier'and adapted'to be raised thereon to heights within predetermined limits to be alined' with and slidunder NF a loaded platform to remove same from its 2b support and transport it to another location.

the character described in which-the maximum simplicity of"construction-and operationissec'ured.

Other objects and adva'ntages will appear as the nature of the improvementslls better understood, the invention consisting substantially in the novel arrangement and c'o-rela tion of partsherein fully described, and illustrated in the accompanying drawings, wherein similar reference characters areiuSe'dtode scribe corresponding parts ;throu ghhut the several views, and then'finally pointed out and specifically defined and indicated the appended claims. 7, I v H The disclosure made the basisof exemp'hfying the present inventive concept suggests a practical embodiment thereof} but the invention is not to be restrictedto the ezg'act details of this disclosure, and the latter, therefore, is to be understood from an? illustrative, rather than a restrictive standpoint.

The inventive idea involved is' capable; of

a receiving a variety of mechanical expressions, 5 one 'of which, for the purpose illustration, is shown in the' accoinpanying.draw; ings, inwhich I F Figure 1 is a top plan view of improved lifting truck underneath a platrqmra sa d platform being partly broken"away;=

vide a truck ofthis character slidably mount- Another object is to produce a device of Figure 2-is a sectional view taken on line 2+2 Figure 1. r V 4 Figure 3 is a perspective view ofthe movable carrier and the lift truckraising means.

= Figure 4 is-va perspective viewof the lift trucktrack carrier.

Figure 5 is a detail perspective view of a portion thereof.

Figure 6 is a perspective view of the inner frame lift truck unit. 1 i o 6 -F1gures' 7'and 8 are fragmental detall vlews of the locking means therefor.

Figure 9 is aperspective view of the outer lift truck frame unit.

Figures- 10 and 11 are detail views of the safety stop for the truck.

, Figure 12 is a fragmental perspective view showing the-relation of the truck to'the plat form when the truck is fully underneath-the said platform.

Figure 13 is a perspective view of a protective-cage wall adapted to be used on the truck, and

Figure 14 is a modified form of the truck elevating means. p

Referring now to the drawings in detail 20 indicates a lower carrier or truck provided with wheels or 'castors 21 upon which it may be moved fromplace to place. The said car- -rier comprises a lower frame portion 22, and

upper'fr'ame portion 23 connected by three angle ron supports 24 and a fourth longer "support 25. A pair of cross members 26 are members '34; Track rail members 36 are suitably secured to the members 34. w

1 r ally thetrack carrier rests upon the upper surface of" the frame 23 and supports" thereon 'alift'truck 40 provided with front and rear wheels 41 and 42 engaging the track rails 36 and upon which wheel the truck is adapted to be slid onto another surface even with the height of the said rails.

For enabling the truck to be moved onto surfaces higher than the aforementioned normal position, means for elevating the track rail carrier 32 is provided. The said means comprises a shaft 45 journalled in brackets 46 secured to the upper frame 23 of the m0v-' able carrier 20, the shaft 45 being providedatone end thereof with a sprocket wheel47 to which one end of a sprocket chain 48 is secured, the opposite end of which issecured to one of the lower track carrier members 33. The elevating means furthercomprises a pulley 49 near the opposite end'of the shaft 45, towhich pulley is secured one end of av rope 50secured at its lower end to the other of the members 33. A second pulley 51 is secured to the shaft 45 at this end and has one end of a rope 52 secured theretowhich passes over idlers 53, 54 and 55 and is-see cured at its opposite end to a drum 56 on a shaft 57 journalled in one wallv of the member 25 and in a bracket 58'secured tothe said member 25. The shaft 57 has also secured thereto a worm wheel 59 in engagement with a Worm 60 011-21 shaft 61 to which is secured a handle 62 by which'the elevating means is operated. Instead of the sprocket wheel 47 and chain 48 I may use apulley and rope arrangement if I so desire.

The truck 40 comprises a lower or outer member 65 and inner or upper member 66 connected together by means of a toggle arrangement, comprising two pairs of links 67 and 68 movably joining the said members 65 and 66 together at their sides and a link 69 pivotally mounted at 70 to brackets 690 on the lower member 65 and likewise secured at 71 to'brackets 7 Oaon the upper member. 66.

The link 69 is slotted at the top thereof as at 72 and has pivotally secured thereto ,at

73 a lever 7 4 by which means the inner member 66 is raised and lowered inrelation-to the lower or outer member65. A slot .75 provides means for locking the saidlower and upper members in raisedposition (see Fig. 8). Rollers 77 on the track rail carrier 32 (see Figs; 2 and 4) together with the rollers 41 and 42 insure continuous-roll or contact for the lift truek40. The upper member 66 is provided with lugs 78 which rest upon brackets 79 secured to the side rails of the lower member 65 when-the upper or inner member is in lowered position.

Overlying the cross members 35 of the rail carrier 32 and underlying the ends of the rails 36 are a pair of bars or strips each provided with a pair of pins 86 extending downwardly through slots 87 (see Figs. 1, 4 and 5) and connected to one end of springs 88'which at their opposite ends are secured to the members 34. This arrangement provides means for laterally alining the lift truck in relation to a platform 89 which in the present instance is shown as supported upon shelves 90 of racks 91. The said platform comprises a top 92 made of either wood or metal and having depending flanges 93 betweenqwhich the lift truck is adapted to I be'advanoed or pushed when it is desired to lift the said platform. It is to be understood the said platform may have thereon mer- --fmm bolts 98 on posts 99-secured to the inner truck member-66. These walls 96 and therearwpartition. 97 together with a front partition whichmay be secured to the sidewalls 96 after the loaded platform is on the lift truck, provide a cage out of which none of 'theamaterialjon the platform may fall out.

In order to prevent the lift truck to prematurely or. accidentally leave the rail carrier, I provide a safety stop which consists of ablocklOOsecured to rear rail carrier plate 85spaced from theupstanding flange 101 of the rear cross member 35 to permit of the insertion of a tongue orprojection 102 passingthrough an opening ina lug 103 on the -rear bar 104 of the outer truck member 65. This tongue-102 is connected by means of a flexible shaft 105 which is secured at its upper -'end to a spring pressed member 106 hingedly :mounted'on-an ear or handle 107 secured to one of the 99. v

Toraise a-loadedplatform from its sup port. on to the truck the movable carrier with the truck thereon-is alined asnear as possible with the. platform; the handles 107 are grasped one in each hand,.the stop or tongue 102 is withdrawn from between the pro ectionlOO and wall 101 and the truck is pushed in the direction of the loadedplatform. If the truck does not properly aline with the platform, the rails on the plates 85 are pushed either-to the right or left against the tension of the springs until-proper alinement between the truck' and platform is obtained after which the truck is pushed under the platform, and when'full'y underneath same, the handle 74 is pulled downwardly, which action will raisethe inner truck member 66 and lift the platform with the merchandise or other material thereon from its support. The lever 74, is then rotated about its pivot 73 and brought into locking engagement with the slot..75 as shown in Figure 8, and the-lift truck is then pulled backwardly until the tongue 102,aga1nisnaps into its Figure 11 position, after which the carrier 20 may be moved to any desired location, a handle 20a being provided for this purpose.

In Figure 14 I have shown a modified form of my invention in which instead of the rope lift, I employ a hydraulic jack which may be operated to raise the rail carrier 32.

From the foregoing it will be seen that I have provided a lifting truck and portable carrier therefor that can be moved very close to a machine, table, rack or other support upon which there rests a loaded platform, and push atruck underneath the said platform and raise same without undue effort and transport the said loaded platform to any desired location, thereby saving a great deal of time in the handling or, transportation of articles from one department to another.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a device of the nature described, an elevator, a carrier thereon, rails on the carrier, a truck slidably mounted on the rails, means for releasably locking the said truck to the carrier, said means comprising a handle on the truck, a spring pressed member pivotally mounted on the handle, a flexible connection secured at one end thereof to the spring pressed member and a tongue at the opposite end of the flexible connection passing through the truck and adapted to lockingly engage the carrier when the spring pressed member is pressed against the handle.

2. In a device of the nature described, an elevator, a truck slidingly mounted thereon, means for releasably locking the truck to the elevator, the said means comprising a spring pressed member pivotally mounted on the truck, a flexible connection secured at one end thereof to the pivotal member, and a tongue at the opposite end of the flexible connection passing through the truck and adapted to lockingly engage the elevator when the pivotal member is operated against the tension of the spring.

3. In a device of the nature described, an elevator, a truck slidingly mounted thereon, means for releasably locking the truck to the elevator, the said means comprising a spring pressed member pivotally mounted on the truck, a flexible connection secured at one end thereof to the pivotal member, a pair of spaced apart upstanding members on the elevator, and a tongue at the opposite end of the flexible connection passing through the truck and adapted to enter the space between the said upstanding members when the pivotal member is operated against the tension of the spring.

In testimony whereof I hereunto afiix my signature.

' ISIDOR EISENBERG. 

